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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク History of oil in California through 1930 ： ウィキペディア英語版 History of oil in California through 1930 The story of oil production in California began in the late 19th century.〔"Oil and Gas Production: History in California." State of California. Web. 18 Mar. 2013. .〕 In 1903, California became the leading oil-producing state in the US, and traded the number one position back-and forth with Oklahoma through the year 1930.〔G. R. Hopkins and A. B. Coons, 1934, "Crude petroleum and petroleum products," in: ''Statistical Appendix to Minerals Yearbook 1932-33'', US Bureau of Mines, p.306-307.〕 As of 2012, California was the nation's third most prolific oil-producing state, behind only Texas and North Dakota. In the past century, California’s oil industry grew to become the state’s number one GDP export and one of the most profitable industries in the region.〔Hugenin, E., 1945, History of gas conservation in California. In Summary of operations〕 The history of oil in the state of California, however, dates back much earlier than the 19th century.〔"The Story of Oil in California." Paleontological Research Institution. Web.18 Mar. 2013. .〕 For thousands of years prior to European settlement in America, Native Americans in the California territory excavated oil seeps. By the mid-19th century, American geologists discovered the vast oil reserves in California and began mass drilling in the Western Territory. While California’s production of excavated oil increased significantly during the early 20th century, the accelerated drilling resulted in an overproduction of the commodity, and the federal government unsuccessfully made several attempts to regulate the oil market. ==Oil in pre-America California== Native Americans were keenly aware of oil reserves in California, and they relied on its utility for thousands of years, albeit not for energy sources. The most abundant oil seep in the ancient California territory was the La Brea tar pits, in present-day Los Angeles.〔 Native Americans used oil from La Brea and other seeps primarily as a lubricant, but they also used it as a sealant to waterproof canoes.〔 When Spanish explorers arrived in California in the 1500s, they also used oil to seal cracks in their ships and the roofs of their homes. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「History of oil in California through 1930」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.